Improve test to not depend on block iteration order and del insertion order
Improve test to not depend on block iteration order and del insertion order

cpcloud/numba,numba/numba,numba/numba,gmarkall/numba,IntelLabs/numba,cpcloud/numba,stuartarchibald/numba,numba/numba,sklam/numba,stonebig/numba,stonebig/numba,gmarkall/numba,gmarkall/numba,seibert/numba,stuartarchibald/numba,stonebig/numba,stuartarchibald/numba,IntelLabs/numba,sklam/numba,IntelLabs/numba,cpcloud/numba,numba/numba,sklam/numba,seibert/numba,stuartarchibald/numba,IntelLabs/numba,gmarkall/numba,sklam/numba,IntelLabs/numba,cpcloud/numba,stonebig/numba,seibert/numba,numba/numba,gmarkall/numba,stonebig/numba,cpcloud/numba,seibert/numba,sklam/numba,stuartarchibald/numba,seibert/numba